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Be based upon full knowledge of the elements of the construction
to be protected and the understanding of the probable behavior of
that construction, and the recommended firestop system protecting
it, were it to be subjected to the Standard Fire Test Method for the
required fire rating. It is important to understand that although it is the
joint between the slab edge and curtain wall that is evaluated during
testing, the surrounding construction components and insulation of the
system are also important in insuring acceptable joint performance.
Be limited only to the specific conditions and configurations upon
which the engineering judgment was rendered and should be based
upon reasonable performance expectations for the recommended
firestop system under those conditions.
Be accepted only for a single specific job and location and should not
be transferred to any other job or location without a thorough review
of all aspects of the next job or location’s circumstances.
Basic presentation requirements
Proper perimeter fire barrier system engineering judgments
should:
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Be presented in an appropriately descriptive written form with or
without detail drawings as may be deemed necessary.
Clearly, indicate that the recommended system is an Engineering
Judgment and NOT a listed system.
Include clear directions for the installation of the recommended
firestop system.
Identify the job name, location and firm the EJ is issued for, along
with the non-standard conditions and hourly rating required.
Provide complete descriptions of critical elements for the system
configuration. These shall include, but not limited to the following:
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